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Упит dcterms_subject_txt:small-scale mine

395 items

  • Hibridni sistem za planiranje i analizu ventilacije rudnika

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilacija rudnika, informacioni sistemi
    ... mines", Australian Coal Journal, No 42, pp 19-27, (1993). 5. BANDOPADHYAY S., RAMANI R., "Convection-diffusion equations in mine ventilation planing", Third International Mine Ventilation Congres, Harrogate, 397-404., (1984). 6. BIENIAWSKI Z. T., Design methodology in rock engineering, Theory, education ...
    ... OBRADOVIĆ I., “Mine ventilation system planning using genetic algorithms”, Proceedings of the Sixth International Symposium on Mine Planning and Equipment Selection, (1998). 62. LONGSON I., TUCK M.A.: "The computer simulation of mine climate on longwall coal face", 2nd U.S. Mine Ventilation Symposium ...
    ... , MUTMANSKY J.M., "Aplication of CPM procedures in mine ventilation", 1st mine ventilation symposium, pp.159-168, SME-AIME (1982). 98. WANG Y.J., HARTMAN H.L., MUTMANSKY J.M., "Recent developments in mine ventilation network theory", 2nd US Mine Ventilation Symposium /Reno NV/, pp. 667-675, (1985) ...

  • Overview of the hydrogeological investigations of recently discovered world class deposits in Serbia

    Nebojša Atanacković, Vladimir Živanović, Veselin Dragišić, Sava Magazinović (2019)
    Europe industry has growing concerns on availability of the raw materials. To address this challenge, the European Commission has created a list of critical raw materials for the EU, launched EIT Raw Materials initiative, and continuously support research projects (like INTRAW, UNEXMIN etc.) with the aim of reducing the dependency and meeting growing demands. In the last 15 years Serbia is experiencing new bust in geological exploration of mineral deposits. Currently 167 exploration licenses are active, covering approximately 6000 ...
    Groundwater, Raw materials, Lithium, Mining, Field hydrogeology

  • Развој модела конструкције просторија отварања рудника са подземном експлоатацијом

    Dražana M. Tošić (2016-08-26)
    Приликом израде подземних просторија у стјенској маси долази до нарушавања природне равнотеже напонских стања стијенског масива који су владали прије израде тих просторија, при чему долази до појаве прертасподјеле напона и његове концентрације у појединим правцима и тачкама, односно долази до појаве пластичних деформација које су праћене ломљењем стијенске масе и кретањима материјала према откопаном простору...
    модел, метод коначних елемената, просторија отварања, напон, дефеормација стијенског масива, алгоритам функционалних зависности

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... sampling was performed in the Kolubara opencast mine which supplies nearly 75% of the country's lignite (Public Enterprize Electric Power Industry of Serbia, 2020). In Slovenia, samples were obtained from the country's only working coal mine Velenje; a mine which uniquely employs the underground exploitation ...
    ... ota alters the rate, extent anddirection of biological processes. However, with the end of mining operations and cessation of drainage works, most mine workings will naturally be flooded with water. This may lead to the restoration of anaerobic conditions in the deposit and the re- activation of processes ...
    ... seam (LLS-2), and thefirst Mid-Polish lignite seam (MPLS-1) (Kasinski et al., 2010; Mastej et al., 2015; Widera, 2016a, 2012). 2.2.2. Konin (KNN) The mine exploits Mid Miocene lignites located to the north of the city of Konin (52°45′57′′N, 18°53′26′′E) and were deposited in a shal- low tectonic depression ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... thesaurus on the semantic scale, with the final goal of upgrading it into an ontology. One of the intended uses of the RudOnto is for production of appropriate terminological resources in sub-fields of mining engineering, such as, planning and management of exploitation, mine safety or mining equipment ...
    ... Stanković, R., Vuković, F., Obradović, I.: An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System. In: Proceedings of the Fifteenth International Symposium on Mine Planning and Equipment Selection, Torino, Italy, Vol. 1, pp. 436-441, 2006. [6] Liadey D. M.: ...
    ... in the process of revitalization [8]. Taxonomies for other types of equipment were subsequently developed within the scope of the Technological coal mine information system [5]. A slightly more complex terminological resource in the form of a thesaurus was developed for geological terms, with more than ...

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... split into simple factors that are then compared in pairs. Each pair comparison is made using the Saaty scale of relative importance shown in Table 1 [25]. Table 1. Analytic hierarchy process (AHP) scale of importance. The Level of Importance Numerical Value Reciprocal Value Extreme importance 9 1/9 (0 ...
    ... Београду [ДР РГФ] Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open- Pit Lignite Mine | Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović | Energies | 2019 | | 10.3390/en12214044 ...
    ... energies Article Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine Stevan Djenadic 1,*, Dragan Ignjatovic 1, Milos Tanasijevic 1, Ugljesa Bugaric 2, Ivan Jankovic 3 and Tomislav Subaranovic 1 1 Faculty of Mining ...

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Аnaliza mogućnosti povećanja nagiba završne kosine površinskog kopa “Podbraćan”

    Vladimir Čebašek, Veljko Rupar (2018)
    Eksploatacijom boksita iz ležišta "Podbraćan" formiran je površinski kop sa maksimalnom visinom zavšne kosine od 280 m. Redovnom kontrolom stabilnosti trenutnog stanja kosina površinskog kopa utvrđeno je da faktor sigurnosti iznosi Fs = 1.71 – 1.85, a što je ukazalo da postoji mogućnost povećanja nagiba kosine. U radu je prikazan postupak analize mogućnosti povećanja nagiba završne kosine površinskog kopa "Podbraćan".
    stabilnost kosina, povećanje nagiba kosina, metoda konačnih elemenata

  • Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG

    Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić (2024)
    CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING

  • Maceralni sastav i rang uglja Ibarskog basena

    Željana Novković, Nevena Andrić -Tomašević, Vladimir Simić, Dragana Životić (2022)
    Donjemiocenski ugljonosni Ibarski basen se nalazi u južnoj Srbiji. Intramontanski ektenzivni basen, izdužen u pravcu severozapad-jugoistok ispunjen je slatkovodnim sedimentima koji su formirani kao deo Dinarskog neogenog jezerskog sistema. Paleoreljef basena izgrađen je od paleozojskih amfibolskih škriljaca, sericit-hloritskih škriljaca, krečnjaka, mermera i metabazičnih stena, mezozojskih peščara, laporca, laporovitih krečnjaka, krečnjaka, dolomita, ofiolita i oligo-/miocenskih magmatskih stena. Tercijarne magmatske stene izgrađene su od oligocenskih dacito-andezita i neogenih kvarctlatita/riodacita i piroklastičnih stena. Miocenski sedimenti izgrađeni su od aluvijalnih breča, konglomerata, peščara, ...
    ugalj, macerali, refleksija vitrinita, Ibarski basen

  • Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković (2019)
    Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...
    višekriterijumske metode, površinski kop uglja, pomoćna mehanizacija, hidraulični bager
    ... 2010. [8] Bescetin A, A decision support system using analy- tical hierarchy process (AHP) for the optimal envoi- rmental reclamation of an open-pit mine. Eviron- mental Geology, 52, pp. 663-672. 2007. [9] Mohamadibadi H S, Tichkowsky G, Kumar, A. De- velopment of a Multi-Criteria Assessment Model ...
    ... existing data in order to optimize the choice of the type of hydraulic excavator in relation to the working conditions of a particular open- cast mine. This paper aims to demonstrate the potential of multi-criteria optimization methods that are used in the analysis of hydraulic excavators. Different ...
    ... quality of output information which can affect the future purchasing decisions of this machinery. Key words: multi-criteria methods, open-cast coal mine, auxiliary machines, hydraulic excavators. https://doi.org/10.1016/j.procs.2015.07.081 https://doi.org/10.1016/j.procs.2015.07.081 ...

  • Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining

    Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... open-cast coal mine, leading to the right choice of machine in relation to those conditions. Energies 2019, 12, 2245; doi:10.3390/en12122245 www.mdpi.com/journal/energies Energies 2019, 12, 2245 2 of 16 Acquiring new mining machines presents a huge investment whether it is a small or a big company ...
    ... is compared in pairs using the Saaty scale of relative importance which is presented in Figure 3. Figure 3. An example of a Saaty scale for defining priorities. Table 2. shows the values of the priorities in comparison of the elements. Table 2. AHP scale of importance. The Level of Importance ...
    ... is compared in pairs using the Saaty scale of relative importance which is presented in Figure 3. Figure 3. An example of a Saaty scale for defining priorities. Table 2. shows the values of the priorities in comparison of the elements. Table 2. AHP scale of importance. The Level of Importance ...

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Процена ризика од загађивања водних ресурса под утицајем напуштених рударских радова на простору Србије

    Nebojša B. Atanacković (2018-08-31)
    Велики број напуштених рударских радова и ограничена средства за рекултивацијуи ремедијацију деградираних простора подстакле су развој метода за издвајањеприоритетних локација на које је потребно усмерити даља истраживања. У датомконтексту, у склопу израде дисертације спроведене су научно-истраживачкеактивности које су за предмет имале анализу утицаја значајнијих напуштенихрударских радова на водне ресурсе на простору Србије јужно од Саве и Дунава.Разматрање предметне проблематике извршено је кроз развој и примену семи-квантитативне методологије за анализу ризика од загађивања површинских иподземних вода на регионалној размери. Примењена ...
    анализа ризика, водни ресурси, водна тела, рудничке воде, рударскиотпад, аналитички хијерархијски процеси, кластер анализа, математичка теоријаатрибута, функције припадности, семи-квантитативне методе
    ... Fresh Water Environment: Technical and Managerial Guidelines for Catchment Scale Management. (The ERMITE Guidelines). Mine Water and the Environment, 23: S1 - S80. 191. Younger P.L., Banwart S.A. & Hedin R.S. (2002) Mine Water – Hydrology, Pollution, Remediation. Dordrecht-London: Kluwer Academic ...
    ... stressors at the regional scale. Environment International (65) 41–53. doi 10.1016/j.envint.2013.12.013 59. Grande J. A., Santisteban M., De la Torre M. L., Valente T., Perez-Ostale E. (2013) Characterisation of AMD Pollution in the Reservoirs of the Iberian Pyrite Belt. Mine Water Environ 32(4):321-330 ...
    ... ed sites on the catchment scale. Небојша Б. Атанацковић Докторска дисертација 245 Journal of Contaminant Hydrology (101) 14–28. doi 10.1016/j.jconhyd.2008.07.006 163. Turner A.J.M., Braungardt Ch. and Potter H. (2011) Risk-Based Prioritisation of Closed Mine Waste Facilities Using GIS ...

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... blending coals of various qualities produces the quality the customer demands. However, when the stockyard is connected with a mine (pit), it is used for homogenization of run-of-mine coal or other ore or material. In order to restrict the time necessary for homogenization activities, stockyards are divided ...
    ... Northern Kazakhstan Mining Company Case Study. In Mine Planning and Equipment Selection (pp. 1017-1027). Springer International Publishing. 8. Stevanović D., Kolonja B., Stanković R., Knežević D., Jovanović M., “Application of stochastic models for mine planning and coal quality control”, ISSN 0354-9836 ...
    ... method is generally more desirable. There is no general rule defining which number of layer is considered small and which large, but in general practice up to 100 layers is considered a small number, and above that a large number of layers. The number of layers that ensures consistent quality of ...

  • Redesign, upgrading and unification of the drum at belt conveyors of the main mining equipment at opencast mines

    Ignjatović Dragan, Maneski Taško, Jovančić Predrag, Tanasijević Miloš (2011)

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • Sustainable use of groundwater resources in terms of increasing the capacity of two interconnected groudwater sources: a case study Bečej (Serbia)

    Polomčić Dušan, Đekić Milan, Milosavljević Zoran, Popović Zorica, Milaković Miroslav, Ristić-Vakanjac Vesna, Krunić Olivera (2011)